digital object

A digital object in a digital library is the textual or multimedia data and the metadata.

Formally, a digital object $D O$ is a quadruple $(h,SM,ST,SS)$ where

1.

$h\in H$ , where $H$ is a set of universally unique handles (labels);
2.

$SM=\{sm_{1},sm_{2},...,sm_{n}\}$ is a set of streams;
3.

$ST=\{st_{1},st_{2},...,st_{m}\}$ is a set of structural metadata specifications; and
4.

$SS=\{stsm_{1},stsm_{2},...,stsm_{p}\}$ is a set of Structured Streams functions defined from the streams in $S M$ and from the structures in $S T$ .